During sexual intercourse, when the male assumes the missionary position, one arm is placed behind his back and the other arm is used to brace his body weight. The male then thrusts his pelvis whilst extending/flexing his brace arm resulting in having larger triceps than biceps.
Did you see Aaron's arms? His triceps are huge! He must be doing the Corey Anders with his old lady!
by rdk236 December 25, 2010